Cleaning machine



- 1 45 Oct 11, J. ,6

CLEANING MACHINE Original Filed Deo. 22. 1924 4 Sheets-Sheet 1 www Oct. 11, 1927. J. CARROLL CLEANING MACHINE Original Filed Dec. 22. 1924 4 Sheets-Sheet 2 Jill!!! Na/w Arrow/Erf( MAJ-v WITNESS W9 7 .BQN D m u A D 1Q f e 5 n.. D D S M .mw .UM. X 1 vmlumm: 1h. QQN ,fff n m n h n n r s .Sw Bw am 4 d D ww uw 8% r-: n GNN ww.. mm GQN J. CARROLL CLEANING MACHI NE Original Filed DeG. 22. 1924 Oct. 11, 1 927.

Wl TNE S S 74-6/ myx/mw l/wf/v ron Jsfw/ UA1/HULL 192 Oct 11 7 .1. CARROLL CLEANING MACHINE original Filed Dec. 22. 1924 4 sheets-Sheet 4 pressure or other platens.-

mum of time and with rig. i4 is Patented Oct. 11, 1927.

UNITED STATES JOSEPH CARROLL, OF BROOKLYN, NEW YORK.

CLEANING MACHINE.

Application led December 22, 1924, Serial No. 757,300. Renewed August 24, 1927.

My invention relates to cleaning machines and has for its object to provide a machine constructed in a novel manner to simultaneously clean the active surfaces of opposed The invention contemplates a cleaning machine of novel construction adapted specially for cleaning accumulated matter from the surfaces of the pressure members in belt presses, in a .minimaximum efficiency. Other more specific objects of the invention will appear from the description hereinafter and the features of novelty will be pointed out in the claims.

In the accompanying drawings, which illustrate an example of the invention without dening its limits, Fig. 1 is a side elevation of one form of the cleaning machine showing the same in use; Fig. 2 is a sectional view thereof on the line 2-2 of Fig. l; Fig. 3 is a section on an enlarged scale on the line 3 3 of Fig. 1; Fig. 4 is a detail plan view of one form of cleaning member forming part .of the invention; 5 1s a sectional View thereof on the line 5--5 of Fig. 4; Fig. 6 is a detail face view of a scraper or scraping device comprising part of the invention; Fig. 7 is a view similar to Fig. 4 with certain materials omitted; Fig. 8 is a. section on theline 8-8 of Fig. 7; Fig. 9 is a side elevation, partly in section, of another form of the cleaning machine showing the same in use; Fig. 10 isa plan view thereof; Fig. 11 is an enlarged detail view of the cleaning member of this form of the invention; Fig. 12 is a sectional view on the line 1.2-12 of Fig. 11; Fig. 13 is a sectional elevation, on the' line 13-13 of Fig. 14, showing still another form of the invention;

a plan View thereof partly in section; Figs. 15 and 16 are sectional views taken respectively on the lines 15-15 and 31 16-16 of Fig. 13, and Fig. 17 is a plan view of the running gear with the carriage shown in dotted lines.

in The shaft 19 projects in opposite directions from the carriage and from the supporting bracket 17 thereof and at its opposite ends is provided with receed carriers 2O as shown in Fig. 1. In the form shown, the carriers 20 include a plurality of recesses 21 and 22 diverging in outward radial directions as shown in Figs. 4 and 7. The recesses 21 are each adapted to contain an abradant 23 which may comprise steel wool or other suitable material, while the cham bers 22 contain scraping devices 24, it bemg understood that the abradants 23 and the scraping devices 24 project outwardly beyond carriers 20 so as to cooperate to perform cleaning functions in the manner to be more fully set forth hereinafter. The scraping devices are preferably in the nature of blades having cutting edges 25 and preferably are resiliently mounted in cups 26, whlch, in turn, are supported by springs 27, as shown in Fig. 8; in order to prevent unintensional shifting of the springs 27, they are set into depressions 28 formed at the proper points inthe bottoms of the recesses 22. In order to increase the cutting or scraping eiiiciency of theV scraping devices 24, they are preferably inclined in the direction of operation of the cleaning members, as indicated'in Fig. 8, and are `maintained in such positions by means'of inclined slots 24 formed upon the interior of the upright walls of the carriers 20 for slidably receiving the opposite end edges of said scraping devices 24 as shown in Figs. 4 and 8. The scraping devices 24, in addition, are formed at their opposite ends with shoulders 29, which, by cooperation with annular plates and 31, maintain the scraping devices against expulsion from the chambers 22 under the-influence of the springs 27, it being understood that the annular members 30 and are so proportioned and arranged as to inwardly overhang the chambers 22, so as to provide abutments for the shoulders 29. To prevent accumulation of the material which is removed by the action of the cleaning members, the chambers 22 are preferably provided in their bottoms with discharge openings 32, through which said material may automatically .drop or be otherwise removed.

For the purpose of permitting the cleaning members to be adjusted to and from operative positions and to be set in the most efficient posi-tions with respect tothe surfaces being acted upon, said members 20 are sliding machine, suitable handles 41, located at ably mounted upon the shaft 19 and are operatin the cleaning members, a very fixed thereon against relative rotation, for powerfu and thorough abrasive and scrapinstance, by means of keyways 33 and cooping action is produced upon the surfaces of erating keys, as shown in Fig. 3. To fix the the platen bypmeans ofthe scraping devices cleaning members in their aforesaid posiand abradants whereby the most stubborn tions, any suitable means may be provided; matter is efficiently and quickly removed. for instance, as shown in the illustrated eX- By manually manipulating the carriage 15 amples, the shaft 19 may be screwthreaded through the medium of the handles 41, the at its opposite ends, as indicated at 34, for machine is operated so as to bring the cleanthe accommodation of nuts 35, whereby the ing devices 20 into contact with every part adjustment and positioning of the cleaning of the surfaces ofthe platens 34, 44. When members may be effected. The cleaning the cleaning operation has been completed. members are operated in the intended man'- the cleaning members 2O are respectively ner, by means of suitable driving mechanism, lowered and raised to the inoperative posiwhich, in the drawings, comprises a Worm tions shown in Fig.v 3, and the machine is gear 36 fixed upon the shaft 19 and mesh ing .removed from the belt press which is now with a worm pinion 37 carried by a countl again in a condition of maximum eiciency. shaft 38; the latter is rotatably mounted 1n To maintain the lower cleaning member 20 a bearing 39 fixed upon the carrlage 15 and in its raised position, the shaft 19 may be operatively connected with a SOllICc of perforated for the accommodation of a pin power, which, in the illustrated example, 1s 1,9', whereby Said lower member is Supin the form of an electric motor 40 located ported, as Shown in Fig 3; ball bearings upon the carriage 15. For the puIpOSe 0f 36 may be located at suitable places for refacilitating the manipulation of the clcanducing friction in the well known way.,

In the form shown in Figs. 9 to 12 inappropriate points upon the carriage may clusive, the cleaning members comprise rebe provided. In the operatlon of the maceseed carriers 20HL connected in pairs by chine, the possibility exists that it may be cross bars 20b and mounted upon a shaft 19a brought into more or less violent contact at Opposite ends thereof in the same Way s with surrounding parts of the apparatus in the form of the invention first described. being cleaned; to prevent such impacts fIOm The cleaning members 2Qa are in the nature injuring the cleaning members and the shaft of receptacles, each of which contains an 19, a guard 42 may be provided and Secured abradant 23 which, as in the first form to the carriage 15, as ShoWI1,. fOr lIlStaIlCe, may be steel wool or other suitable material. in Figs. 1 and 2. The abradants 23 rest upon false bottoms Assuming that the cleaning machine 1S t0 45 provided in the recessed carriers and be used for @leaning a belt press for which mounted upon screwthreaded stems 46 which purpose, it is particularly adapted, the ca1'- extend downwardly through the bottoms of riage 15 is moved upon the bed or one presthe carriers and accommodate wing nuts 47. sure platen 43 of the press and beneath the Springs'48 are-located between the bottoms other platen 44 thereof; the machine is thus of the carriers and their false .bottoms 45 located between opposed pressure platens, as and exert a tension tending to force the shown, for instance, in Fig. 7. The upper latterl in upward directions. The arrangecleaning member 20 is adjusted upwardly ment is such that the abradant in each cleanon the shaft 19 to a position in which the ing member is automatically placed under a abradants 23 and the scraping devices 24 tension when the cleaning machine is in use, are in engagement with the lower surface of so as to perform its cleaning function in the the platen 44 and is fixed in this posltion most eiiicient manner and furthermore so by means of the upper nut 35. The lower that the abradant in each carrier will be cleaning member 2O is similarly moved downautomatically forced outwardly to compenwardly on the shaft A19 until its abradants sate for wear resulting from such use. The 23 and scraping devices 24 are in engagetension ofv the sprin s 48 may be varied by ment with the upper surface of the lower adjusting -the positions of the Wing nuts laten 43. As the motor 40 is started, power upon the respective stems 46; to preventthe will be applied to the shaft 38 .and to the complete disconnectionl of the wing nuts worm pinion 37 and this willbring about a vfrom said stems, the vlatter may be provided rotation of the worm gear 36 and al correwith stops, for instance, in the form of pins sponding operation of the shaft 1,9 and the 49, as shown'in Fig. 12. The cleaning memcleaning 'members 20. In this way, the bers may be adjustably mounted and fixed abradants 23 and the scraping devices 24 in adjusted Ypositions upon the shaft 19a in will be caused to act upon the surfaces of the same way as in the forms illustrated in the platens 43 and44 to remove accumulated Figs. 1 to 8, inclusive land the shaft 19a acmatter therefrom and to restore said surfacesvcordingly may be screwthreaded as indito their initial clean condition. By providcated at 34a for the accommodation of nuts ing the worm gearing as the medium for 35, The shaft 19a extends vertically in opluf) lll)

posite directions from a bearing bracket 17a in the bearing 18 inwhich it is journalled; the bracket 17 a is mounted upon a travelling carriage 15, which may correspond to the carriage 15 of Fig. 1 and be similarly mounted upon wheels or equivalent devices 16, so as to be easily moved about. For facilitating the manipulation of the carriage, handles 41 may be provided as in the first form. The cleaning members of the form now being described are preferably operatively driven at a rapid rate and for this purpose a bevel gear 36a may be fixed upon abevel pinion 37* carried by a counter shaft' 38". The latter is journalled in the'bracket 17l and in bearings 39a and carries a gear 39h, which meshes with a pinion 39cr fixed upon the shaft 38b of an electric motor 40a. As in the first form. the motor 40E-is mounted upon the carriage l15, which may also be provided with a protecting guard 42, for preventing injury to the cleaning members, as previous,- ly set forth herein.

The machine is shown in Fig. 9 in operative co-relation with the pressing platens 4.3 and 44 of a belt press, it being understood that the adjustment of the cleaning members 20a with respect to theY surfaces of said platens is accomplished in approximately the same way as in the form shown in Figs. 1 to 8 inclusive. After the adjust-ment has been effected and assuming the motor 40a to be in operation, the shaft 19a will be rotatably driven through the means of the gearing 39, 39h, shaft 38?, and gearing 37a, 36a, and accordingly will rotate the cleaning mem; bers 20a and cause the abradant 23a thereof to operate in abrasive contact with 'the surfaces of platens 43, 44, respectively. As in the first form, the machine is manipulated to cause the cleaning members to clean all parts of the surfaces of the platens 43 and 44, it being understood that afterthis operation has been completed, the cleaning members 20a are returned to inoperative positions, as in the yfirst form, to permit the cleaning machine to be removed from the press.

In some cases, thedistance between the platens 43 and 44 may loe too small to permit a workman to manually manipulate the cleaning machines as previously described herein or for some other reason, it may be desirable to have a power manipulated machine; in such cases, the self-propelled cleaning machine illustrated by way of eX- ample in Figs. 13 to 17 inclusive may be utilized. In this machine the carriers 20b may be either in the form shown in Fig. l or Fig. 9, and similarly may be mounted upon a shaft 19b at the opposite 'ends thereof; the shaft 19b`extends vertically 1n opposite directions from a bracket 17b in the bearings 18b of which it is journalled, said bracket being fixed upon the travelling carriage 15b as in the forms previously described. The shaft 19b and thel carriers 20" with their associated elements maybe driven by suitable driving mechanism, for instance as in Fig. 1 or in Fig. 9, the illustrated example showing a driving arrangement similar to that of Fig. 1. That is the shaft 19b carries a worm gear 36b in mesh with a worm pinion 37b xed upon a countershaft 38b rotatably mounted in a bearing 39b projecting upwardly from the carriage 15"; the counter-shaft 38b is operatively connected with an electric motor 40b located upon the carriage 15b as shown in Figs. 13 and 14; in the preferred arrangement and in order to keep the machine as low as possible, the carriage 15b is provided with a recess 15c in which the motor is mounted. As so far described, the machine of Figs. 13 to 17 inclusive may include all of the features of either or both of the forms previously described, it being understood that the operation, as a cleaning machine, and the advantages are the same as set forth with respect to the machines of Figs. l and 9.

As shown in the drawings, the countershaft 38b carries a pinion 50 which meshes with a gear 51 secured upon a stub shaft 52; the latter is journalled in bearings 53 fixed upon the carriage 15b and further carries a pinion 54 arranged in mesh with a gear 55. This gear is mounted upon a shaft 56 to rotate therewith, said shaftl being journalled in bearings 57 also located upon the carriage 15b and extendingloosely through a sleeve 58 rotatably mounted inthe one bearing 57 and forming part of or connected-to rotate with a pinion 59; for the purpose of operatively connecting the pinion 59 at will with the shaft 56 and consequently with the motor 40", a second sleeve 60 is slidablyv mounted upon the shaft 56 and is connected therewith by means ofa key ofthe-'likeV 61,v it being understood that the sleeves 58 and 60 at their opposed ends are provided respectively with lugs and recesses 62 or any equivalent devices for detachably coupling said'sleeves together.' In order to facilitate the "connection and disconnection of the sleeves 58 and 60, a handled lever63 is pivoted at 64 upon 'the carriage 15b and is connected at 64a with the sleeve 60 in any conventional manner to slidably manipulate the same without interfering with its rotation. The pinion 59 meshes with a companion pinion 65 fixed upon a shaft 66 journalled in bearings 67 upon the carriage 15b and carrying also a worm pinion 68 arranged in mesh with a worm gear 69.7as shown inwFig.V 13.

The worm gear 69 in turn is secured upon' a shaft 70 located beneath the carriage 15b and having a gear 71 fixed thereon and meshing with a gear 72 fastened upon a shaft -73 journalled in bearings 74 depending from said carriage 15"; rear wheels 16a similar to those of Figs. 1 and 9 are fixed upon the shaft 73 and support the one end of the carriage 15b as shown in Fi 13. As illustrated in Figs. 13 and 14 and y dotted lines in Fig. 17, the carriage 15b is provided at the proper points with suitable openings for the accommodation of the gears 51 and 55 and the worm gear 69. At the front, the carriage is mounted upon front Wheels 16b which are carried by an axle 75 mounted to rotate in a frame 7 5"; `the latter is pivotally connected with the carriage 15b by means of a king-bolt 76 and a fifth-wheel 77. Upon the periphery of its movable section. the fifth-wheel 77 is provided with a toothed segment 78 meshing with a worm pinion7 9 which forms part of or is fixed upon a controlling member 80 journalled in bearings 81 depending from the carriage 15b; as shown in Fig. 13, the member 80 is provided with an axial bore 81 of rectangular or other non-circular cross-section for removably accommodating the correspondingly shaped operating or key member 82 which may be provided with a hand wheel 83 or its equivalent for manipulating said member 82. To facilitate the connection of the key member 82 with the controlling member 80, atubular guide member 84 ma be fixed upon the carriage 15b in line wit vthe member 80, the guide member being provided with an axial bore 85 in axial registry with the lbore 81; the arrangement 1s such that the outer end of the bore 85 is located at or 4near an edge of the carriage 15b so as to be readily accessible for the insertion of the key member 80.

It will be understood, when the machine of Figs. 13 to 17 inclusive is in use, for instance, for cleaning belt presses, it is placed between the platens 43 and 44 as in theI previous forms and theA parte are adjusted to bring the abradants or other devices of the carr1ers`20b into .contact with the surfaces of the respective platens 43 and 44 as shown in Fig. 13. The'` motor 40b is then started to ,operate the carriers 20b as, in the forms first described, the motor at the same time being utilized to furnish the motive power for propelling the machine in the following manner. The lever 6,3 is pivotally operated to shift the sleeve 6() toward the sleeve 58 andV to interconnect the lugs and recesses -62 thereof and thereby connect the pinion 59 with the shaft 56. This causes the gearing 50, 51, 54, and 55 to transmit motion to the pinions 59 and 65 and consequently brings about an operation of the worm-gearing 68--69 'and the gears 71 and 72 and thereby operates the rear wheels16a to propel the carriage 15 and its associated parts. The gearing whereby power is transmitted from the motor 40b to the rear wheels 16a is a reduction gearing and is so'arranged that the propulsion of the machine will take place at a :relatively slow speed so predetermined that the action of the abradants or other devices of the carriers 20b will be most eiiiciently utilized. It will be understoodr that during the normal travel of the machine in a given direction thel key-member 82 is disconnected from the machine. When it is desired to change the direction of travel of the machine, the said key-member 82 is inserted into and throu h the bore 85 of the guide member 84 and 1s guided thereby into worm pinion 79; this operation of the latter is transmitted to the segment 78 whereby the movable member of the ifth-wheel 77 is rotatably actuated and thus swings the frame 75a and the front wheels 16b in one direction or the other to correspondingly change the direction of travel of the machine. As soon as the desired adjustment has been effected, the key-member 82 may be withdrawn from the bore 81 and disconnected from the machine until another change in the direction of travel thereof is deslred. If and when the propulsion of the machine is to be arrested, the lever 63 is swung in a direction to disconnect the sleeve 60 from the sleeve 58, whereby the rear wheels 16a are disconnected from the motor 40b and the machine accordingly comes to a standstill. It will thus be seen that the maclnne shown in Figs. 13 to-17 inclusive is selfropelled and requires no manual attentlon other than that required to start, stop, and steer the same.

It will be understood that the platens 43 and 44 of the drawings are intended to be representative of o posed pressure and other platens of any kin upon the operative surfaces of whichforeign matter, whereby the efficiency ofthe platens is interfered with, collects in the operative use of the apparatus of whichv the 'platens form a part. In any case, the cleaning machine. is adapted to simultaneously clean the operative surfaces of opposed platens and to remove therefrom any of the aforesaid collected matter. The machine in all of its forms is rapid and thorough in action and restores the operative surfaces of the platens to a maximum serviceable condition in a minimum of time.

This is of particular advantage where the element of time is of importance and is particularly important in connection with belt presses, the pressure platens of which have heretofore been cleaned by hand. This operation, as heretofore performed, requires the services of a considerable number of men using hand scrapers and ofttimes consumes as much as eight or ten hours of time. Becausev of these facts, it has been found necessary to do this Work usually at night, so that loss of production due to shutting down of presses might be avoided. The cleaning v operation thus becomes not only expensive,

but is difficult to perform satisfactorily, due to the fact that the matter with which the platens of Abelt presses become covered is of a, gunm'y nature, which becomes very hard. The use of the hand Scrapers also carries with ity the possibility that the surfaces of the 'platens may be nicked or otherwise injured. These disadvantages are entirely overcome with the resent cleaning machine, which may be used; if necessary, after' each pressing o eration, of each ro 1 of belting has been completed, as the work of cleaning when done with the assistance of the` improved cleaning machine requires only relatively small perio s Because of the accurate operation of the niachine, due to the accurate adjustment of the cleaning members which is possible the dan `r of injury of any kind to the 'surfaces of te platens is also obviated.

Variouschanges in the specific forms shown and described may b e made within the scope of the claims without departing from the spirit of 'my invention.

1. A machine for simultaneously cleaning opposed platens comprising a travelling carriage including runnin gear, rotatable cleaning members mounte upon said carriage and rotatable about axes transverse to the surfaces of said platens, said member being adapted to simultaneously engage said opposed plateiis and operating mec anism carried by said carriage and operatively connected with said cleaning members for -simultaneously operating the same.

2. A machine for cleaning belt presses comprising a travelling carriage including running gear, a plurality of cleaning members. rotatably mounted upon said carriage and projecting transversely to said carriage in opposite directions therefrom and driving mechanism carried by said carriage and operatively connected with said cleaning members to simultaneously rotate the same.

3. A machine for cleaning belt presses comprising a horizontally travelling carriage including running gear, a vertical shaft journalled upon said carriage and projecting' transversely in o posite irections therefrom, cleaning mem rsmounted upon said shaft at opposite ends thereof and driving mechanism carried by said carriage and operatively connected with said shaft to simultaneously actuate said cleaning members.

4. A machine for cleaning belt presses that is, when the pressing of time.

comprising a horizontally travellin carriage including running gear, a brac et fixed upon said carriage, a vertical shaft journalled in said bracket and projecting transversely in opposite directions therefrom, cleaning members mounted u on saidl shaft at opposite ends thereof and driviu mechanism carried by said carriage an operatively connected with said shaft for simultaneously operatin said cleanin devices.

5. A machine or cleaning elt presses comprising a horizontally travelling carriage includin running gear, a bracket fixed upon said carriage, a vertical shaft journalled in said bracket and projectin transverselyin opposite directions there rom, a recessed carrier mounted upon each end of said shaft, an abradant in the recessed carriers projecting outwardly beyond the same and a motor carried by said carriage and operatively connected with said shaft for simultaneously rotating said carriers and the 'abradant therein. e j

6. A machine for cleaning belt presses comprising a travelling carriage, a bracket fixed upon said carriage, a vertical shaft journalled in said bracket and projecting in opposite 'directions therefrom, carriers mounted upon said shaft at opposite ends thereof and each provided with a plurality of recesses, an abradant in some of said recesses, scraping devices in others of said recesses and a motor mounted upon said carriage and operatively connected with said shaft for simultaneously rotating said carriers and the abradant and scraping devices carried thereby.

7. A machine for cleaning belt presses comprising a travelling carriage, a bracket fixed upon said carriage, a vertical shaft journalled in said bracket and projecting in opposite directions therefrom, single carriers mounted upon said shaft at opposite ends thereof and facing in opposite directions, a plurality of abradants carried by each of said carriers, a plurality of scraping ldevices mounted upon each ofv said carriers, said abra'dant and scraping devices (3o-operating to perform cleaning functions, a Worm gear fixed upon said shaft, a worm pinion connected with said worm gear and a motor mounted upon said carriage and operatively connected with said Worm pinion.

8. A machine for cleaning belt presses comprising a travelling" carriage, a bracket fixed upon said carriage, a vertical shaft journalled in said bracket and projecting in opposite directions therefrom, a recessed carrier mounted upon each end of said shaft, cleaning means mounted in said recessed carriers, and resilient devices in said carriers whereby said cleaning means are automatically placed under tension when in use and yieldingly forced against the surfaces being cleaned.

IUU

9. A machine for cleaning belt presses coiprising a travelling carriage, a-bracket fix u n said carriage, a vertical shaft journal ed in said bracket and rojecting in opposite directions therefrom, c eaning mem-- bers adjustably mounted upon opposite ends of saidshaft and movable lengthwise thereof to and from operative ositions and driving mechanism mounte upon said carriage and operatively connected with said shaft.

10. A machine 'for simultaneously cleaning opposed platens comprising a travelling carriage, movable cleaning members mounted upon said carriage and adapted to simultaneously engage said opposed pressure plates, operatlng mechanism carried by said carriage and operatively connected with said cleanin members for simultaneously operating t e same, and propelling mechanism whereby said machine is propelled coincidentally with the operation of said cleaning members.

11. A machine for cleaning belt presses comprising a travelling carriage, a plurality of cleaning members rotatably mounted upon said carriage and projecting in opposite directions therefrom, driving mechanism carried by said carriage and operatively connected with said cleaning members to simultaneously rotate the same, and propellin mechanism operatively connected with said driving mechanism for propelling said machine.

12. A machine for cleaning belt presses comprising a travelling carriage, a vertical shaft journalled upon' said carriage and projecting in o poslte directions therefrom, cleaning mem rs mounted upon said shaft at opposite ends thereof, driving mechanism carrled by said carriage and operatively connected with said shaft to simultaneously actuate said cleaning members and propel- 1in lmechanism operatively connected with sai driving mechanism for propelling said machine.

13. A machine for cleaning belt presses comprising a travelling carriage, a bracket fixed upon said carriage, a vertical shaft journalled in said bracket and projecting in opposite directions therefrom, a recessed carrier mounted upon each end of said shaft, an abradant in the recessed carriers projectmg outwardly beyond the same, a motor carried by vsaid carriage and operatively connected with said shaft for simultaneously rotating said carriers and the abradant therein, propelling mechanism whereby said machine is propelled and means for Vconnecting said propelling mechanism and saidmotor and disconnecting it therefrom at will. n v Y 14. machine for cleaning belt presses comprislng a travelling carriage, a bracket fixed upon sa1d carriage, a vertical shaft journalled in said bracket and projecting in opposite directions therefrom, recessed car- .riers mounted upon said shaft at opposite ends thereof, abradants in said carriers pro- ]ectlng beyond the same, a motor mounted upon said carriage and operativelyl connected with said shaft, propelling mechanism operated by said motor for-'propelling said machine and means whereby the latter is manually steered to change its' direction of travel at Will;

15. A machine for cleaning belt presses comprising a travellingcarriage, rear Wheels and steerable front wheels on which said carriage is mounted, a bracket fixed upon said carriage, a vertlcal shaft journalled in said bracket and projecting in opposite directions therefrom, cleaning members mounted upon opposite ends of said shaft, driving mechanism mounted upon said carriage and operatively connected with said shaft, a controlling member for adjustin sai-d front wheels to change the direct1on of travel of said carriage, said` controlling member having an axial bore of non-circular cross-section and an `operating member adapted to lit said axial bore and insertable into the same at will `for operating saidcontrolling member to change the direction o f travelv of the-machine.

In testimony whereof I have hereunto set my hand.

JOSEPH CARROLL. 

